21202322120 has 64 divisors (see below), whose sum is σ = 54593395200. Its totient is φ = 7259616000.

The previous prime is 21202322117. The next prime is 21202322131. The reversal of 21202322120 is 2122320212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159866 + ... + 260694.

It is an arithmetic number, because the mean of its divisors is an integer number (853021800).

Almost surely, 2^21202322120 is an apocalyptic number.

21202322120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202322120 is an abundant number, since it is smaller than the sum of its proper divisors (33391073080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21202322120 is a wasteful number, since it uses less digits than its factorization.

21202322120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101598 (or 101594 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21202322120 its reverse (2122320212), we get a palindrome (23324642332).

The spelling of 21202322120 in words is "twenty-one billion, two hundred two million, three hundred twenty-two thousand, one hundred twenty".